Security readout for executives and security teams
Plain-English summary
A malicious web page could cause older Google Chrome versions to leak data from another website or origin. The issue affects Chrome before 85.0.4183.83 and is rated medium by Chromium, but the confidentiality impact is high if a user visits crafted content.
Executive priority
Treat as a moderate browser data-exposure risk. Prioritize confirmation through endpoint inventory because current Chrome fleets are likely patched, while unmanaged legacy browsers remain the main business concern.
Technical view
CVE-2020-36765 is an insufficient policy enforcement flaw in Chrome Navigation. A remote attacker could leak cross-origin data through crafted HTML. CVSS 3.1 is 6.5: network reachable, low complexity, no privileges, user interaction required, high confidentiality impact, no integrity or availability impact.
Likely exposure
Exposure is likely limited to endpoints running Google Chrome earlier than 85.0.4183.83. Auto-updated Chrome deployments should usually be remediated, but unmanaged, legacy, kiosk, or offline systems may still carry risk.
Exploitation context
The supplied sources do not report active exploitation, and the CVE is not listed as KEV. Exploitation requires user interaction with crafted HTML and targets cross-origin data confidentiality rather than system compromise.
Researcher notes
The public bundle gives a concise root cause and impact but limited bug detail. Do not infer broader Chromium-based product exposure from these sources alone; validate against vendor advisories for any non-Google browser estate.
Mitigation direction
- Upgrade Google Chrome to 85.0.4183.83 or later.
- Remove or isolate unsupported Chrome versions from production use.
- Verify enterprise browser auto-update policies are enforced.
- Consult Google Chrome guidance for any environment-specific remediation details.
Validation and detection
- Inventory Chrome versions across managed and unmanaged endpoints.
- Confirm all Chrome installations are 85.0.4183.83 or later.
- Review patch management exceptions for legacy browsers.
- Check kiosks, VDI images, and offline systems separately.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2020-36765 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://chromereleases.googleblog.com/2020/08/stable-channel-update-for-desktop_25.htmlCVE reference
- https://issues.chromium.org/issues/40091076CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.